Enforce Conventional Commit Messages

[sweptsquash]

This pull request introduces improvements to commit message standards and enforces them using git hooks and new dependencies. It updates the documentation to clarify commit conventions, adds configuration for commit linting, and modifies husky hook scripts to integrate linting and commit message checks.

Commit message standards and documentation:

• Expanded and clarified commit message guidelines in CONTRIBUTING.md, including detailed conventional commit types, breaking change notation, and instructions for revert commits. [1] [2]

Commit linting and git hooks:

• Added commitlint configuration to package.json to enforce conventional commit messages.
• Added .husky/commit-msg hook to run commitlint on commit messages.
• Updated .husky/pre-commit hook to run lint-staged for linting staged files.

Dependency updates:

• Added @commitlint/cli and @commitlint/config-conventional to devDependencies for commit message linting.
• Updated @vitest/coverage-v8 and vitest versions in devDependencies. [1] [2]